Steam



No Model.) 3 Sheets-Sheet 1..

W. E. GOOD.- STEAM ENGINE.

No. 448,184. Patented Mar. 10, 1891.

(No Model.) 3 Sheets- Sheet 2.

W. E. GOOD.

STEAM ENGINE.

No 448,184. Patented Mar. 10,1891.

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3 Sheets-Sheet 3. W. E. GOOD. STEAM ENGINE.

(No Model.)

Patented Mar. 10,1891

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lVILLIAM E. GOOD, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE SOUTI-IWARK FOUNDRY AND MACHINE COMPANY, OF SAME PLACE.

STEAlVl ENGiNE.

SPECIFICATION forming part of Letters Patent No. 448,184, dated March 10, 1891.

Application filed December 29, 1388- To all whom it may concern.-

Be it known that I, XVILLIAM E. GOOD, of the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Steam-Engines,of which the following is a true and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to the construction of steam-englnes, and particularly to single-cylinder compound engines.

In the accompanying drawings I have illus trated an engine provided with my improvements, the nature of which will be best unr 5 derstood after explaining the drawings, and which are hereinafter clearly pointed out in the claims.

In the drawings, Figure 1 is a side sectional elevation on the line a; a: of Fig. 2. Fig. 2 is a front sectional elevation on the line "y 'y of Fig. 1. Fig. 3 is a front view of the door R, reduced in size to save space. Figs. 4c and 5 are sectional views of the steam-ports and valve, showing the valve in different positions. Fig. 6 is a side view of the governor, and Fig. 7 a cross-section on the line .2 of Fig. 6.

A is the cylinder, having, as shown, an extension A of large though smaller diameter,

which serves as a stuffing-box and guide for the trunk-extension of the piston.

B is the piston fitting in the cylinder A and attached to and forming a part of it, as what I will call a trunk-piston B, fitting in the 5 extension A of the cylinder A. The piston is a differential one, and, as will be seen,

steam admitted on the under side of piston 13 acts 011 its annular face B while when admitted on the upper side it acts on the whole surface of the piston. There is an opening A formed throughopposite sides of the end of the extension A of the cylinder, a similar opening 13 being formed in the end of the trunk piston B these openings being ar- 5 ranged to register with each other when the piston is in its lower position and being for the purpose of permitting easy access to the pin connecting the piston and connecting-rod.

D is the connecting-rod; O, the main shaft;

C, the crank, and E the pin by which the Serial No. 294,954. (No model.)

piston and connecting-rod are attached to each other.

As shown in the drawings, the connectingrod D is made up of a continuous strap D, holding journal-boxes F F in its ends, anda stout rod D bearing against the ends of the journal-boxes. This rod should be threaded and provided with a nut or nuts, so that by turning it the boxes can be forced apart. As shown, the upper end d" of the rod is rounded and fitted in a socketf in the box F .and the lower end (Z threaded and fitted in a nut f, formed in or attached to box F, (15 being a jam-nut to lock the rod in position insteadof a screw, its familiar mechanical equivalent. The wedge maybe used to force the rod D against the boxes.

(Z is a cup on the top of strap D, from which an oil-hole leads to the pin E, as shown, and the piston 13 is made with a downward 7o curve, terminating in a point 1), arranged cent rally and above cup (Z so that any oil thrown against the piston will flow from said point Z) into the cup, thus keeping the pin E lubricated.

G is the port leading to the lower end of cylinder A, and G the port leading to its upper end, these ports being, as shown, formed in a valve-box II, forming part of the same casting as the cylinder.

I is the valve, having formed in it ports or passages i 21' i which, as shown in the drawings, are properly arranged and proportioned with respect to the months 9 and g of the ports G G. By making the passages 'i i 1' open at the top, as shown, and recessing the valve-box bonnet, as at g g g forming these recesses of corresponding area to the mouths of ports G, G, and J and opposite to them, the valve is balanced and at the sametime 0 the extent to which the ports G G are opened as the edges of the valve pass over them practically doubled.

J is the steam-passage leading from a steampipe (indicated by dotted lines) to the valve, as shown.

K is the blow-01f or exhaust pipe.

U, Figs. 4 and 5, is a valve in port G, through the wall of which a passage U is made to the exhaust-pipe, as shown.

a is the valve-stem, and u a light spring. This device is intended to be used when my engine is not used as a condensing-engine, so that when the pressure in port G falls below the atmospheric pressure air preferably drawn from the exhaust, so as to behot, may be admitted to the cylinder. It is held to its seat over passage U by a light spring.

L is the valve-rod; L, the eccentric-strap to which rod L is attached.

M is the eccentric, (and here I will call at tention to the fact that the main shaft 0 is provided with a square block 0 formed around it in forging or casting and centrally perforated, as shown at C to form a square block at 0 also perforated, as at 0", for the purpose hereinafter specified.) The eccentricis provided with a square opening M of a form to fit neat-1y on the block 0 on two sides, but longer than the block in the other direction, as shown in Fig. 7, so that it can slide on it. The eccentric is held in place on the block in any convenient way, as by a collar 0, Fig. 0.

N is a link pivoted to the eccentric by a pin m resting in a bearing m in the eccentric, said link extendingup through the perforation O of block 0 and being pivoted at its top. as shown, to a lever O, which lever is pivoted at 0 to lugs 0 formed on or attached to the shaft C, and is provided with a weight 0 at its other end. The weighted lever O is held against the shaft, as shown in Fig. 6, by a spring of regulated power. As shown, the spring P passes through a perforation G in the block 0" on shaft C, said perforation being preferably slightly inclined, as shown, and is secured to an eyebolt P, which is secured in a cup or bell Q by a nut P out of place, as in each case they abut against solid walls of metal.

R is the casing of my engine. As shown, this casing is attached to the cylinder and incloses all the moving parts outside of the cylinder. The bottom of this casing is to be filled wit-h oil and water, as is usual in such engines. To permit easy access to the mechanism within this casing, I provide a door R with a gasket 7', by which it makes a tight joint when closed, said door being hinged at one side, as shown at 1' and having a fastening or fastenings, as 0', adapted to press it close to the casing and effect atight closure thereof.

S is a pipe connecting with the interior of easing R and terminating in a nozzle situated in a-pipe K, connected with and forming part of the exhaust-passage K, as shown.

The operation of my improved engine is as follows: First, as to the cylinder and piston, in Fig. 1 the valve I is shown with its port t just opening into the port G, so that the high pressure steam from the port J can enter G,

I prefer also to.

eesasa and in Fig. t the valve has moved up-to open this passage to the full extent. It will be no ticed that while the steam is entering G the valve-port 2' connects the port G with the exhaust-pipe, as shown. The high-pressure steam acting on the annular face B of the piston forces it up, and the air or steam on the other side escapes freely through K. The valve, having accomplished its full upward stroke, moves backward, closing the passage between ports J and G at such a point in the upward motion of the piston as may be determined by the governor and the setting of the valve and permitting the steam to expand in the cylinder until the piston reaches its uppermost position, at which point the valve is in such a position as to close the exit-passage and connect the ports G'and G through port 172 as is shown in Fig. 5, which represents the valve position after the piston has begun to move downward. The steam then passes from the lower part of the cylinder through ports G, 2', 2'2, and G to the top of the cylinder, acting on the face B of the piston as it expands and forcing it down, as the face B greatly exceeds the annular face 13 in area. At the end of this downward motion the valve moves up to open passage K and the described operation again begins. The motion of the trunk-pistonB,open, as it is, to the chamber formed by easing R, will naturally alter the atmospheric pressure in it and tend to blow oil through any opening, as along the shaft 0 or the door R. To overcome this, I have devised the plan of con necting the chamber with the escape-pipe by means of pipe S, the nozzle S of which is surrounded by and in line with the pipe K. The escaping steam of course creates a suction in pipe S, as the arrangement of nozzle S and pipe K is in effect an ejector, and the pressure in the casing R is thus maintained at somewhat less than that of the atmosphere.

It is of course to be understood that the engine represented is one of very high speed, and the escape of steam is so constant that there is a practically constant suction in pipe S. Even at lower speeds the device will be useful as affording a ready escape for air in casing R.

The action of the governor is as follows: As shown in Figs. 6 and 7 the eccentric is in its position of greatest throw, its eccentricity being represented by the distance between m and m, Fig. 7, which distance is the resultant of the distance m m by which the center of the eccentric is away from the center'of the shaft in the directionin which it moves on said shaft and the distance m m by which the center of the eccentric is away from the center of the shaft in a direction at right angles to m m As the speed of shaft 0 increases, the weight. 0 of course tends to fly away from it, this action being counteracted by spring P, and as the centrifugal force of the weight gradually exceeds the power of the spring it moves out, forcing the end of lever 0, connected with link N, down and by means of said link causing the cocentric to move on its square bearing C in the direction which in Fig. '7 is downward, toward M thus shortening the throw of the eccentric until it reaches its minimum, which is equal to the distance between on and m Fig. 7, the point m then coinciding with m, at which point the valve would open the connection between J and G to the extent of the lead of the valve only, and if allowed to move farther, so that 017. would been the other side of m, themotion of the valve would be changed to reverse the engine.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In combination with a vertical single cylinder compound engine having a cylinder A with extension A and apiston B, working in the cylinder, with a hollow trunk-extension B, working in the extension A, said piston B having a downwardly-curved and centrally-pointed form I), a pin E, secured in the trunk-piston B, and a connecting-rod D, coupled to the piston by pin E and having an oil cup and hole d situated below the point- I).

In a single-cylinder compound engine, a cylinder A, having a prolonged extension A, having openings A in its sides, in combina tion with a piston B, working in the cylinder,

a trunk-extension B of said piston working in the extension A of the cylinder end, having openings 13 through its sides so arranged as to register with the openingsA at the bottom of the stroke, a pin E, secured in the trunk-piston B ,and a connecting-rod having hearings on said pin, all substantially as and for the purpose specified.

3. In a single-cylinder compound engine, a cylinder A, having an extension A, a piston B, working in cylinderA and havinga trunkext-ension Working in extension A of the cylinder, ports G G, exhaust K, steam-port J, and valve I, having ports M '5 adapted to register with portsJ G G and exhaust K, as specified, all substantially as shown and de scribed.

l. In a single-cylinder compound engine, a cylinder A, having extension A, a piston B, working in cylinder A and having a trunkextension working in extension A of the cylinder, ports G G, exhaust K, steam-port J, valve I, having ports 2 '11 1?, adapted to register with ports J G G and exhaust K, as specified, a valve-rod and eccentric-strap, a rotating shaft 0, made with straight sides at G and with a perforation C an eccentric M, having a slot M, by which it is secured to the shaft and free to slide thereon, a jointpin m, secured in the eccentric, a link N, extending from pin m through perforation G a pivoted weighted lever 0, attached to said link, and a counterbalancingspring arranged to resist the momentum of weighted lever 0, all substantially as and for the purpose specified.

5. In a single-cylinder compound engine, a cylinder A, having extension A, a piston B, Working in cylinder A and having a trunkextension working in extension A of the cylinder, ports G G, exhaust K, steam-port .I, valve I, having ports i 1" 2' adapted to register with ports J G G and exhaust K, as specified, a valve-rod and eccentric-ring, a retating shaft 0, made with straight sides at O and square block at 0", said squares C 0" having perforations O O passing through them, an eccentric M, having a slot M, by which it is secured to the shaft and free to slide thereon, a joint-pin m", secured in the eccentric, a link N, extending from pin m through perforation G a pivoted weighted lever 0, attached to said link, and a counte1 balancing spring arranged in perforation C", an eyebolt to hold said spring, and a cup to secure said bolt on the side of the shaft opposite to the lever 0, all substantially as and for the purpose specified.

[3. In combination withavertioalsteam-engine having a trunk-piston extending out of its cylinder and a connecting-rod working on a pin secured in the trunk-piston, the device of forming the head of the piston with a downwardly-extending point, in combination with an oil hole and cup in thetop of the connecting-rod.

VILLIAH E. GOOD. 

